US3412010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High conversion level hydrogenation of residuum
Assignee: Hydrocarbon Research Inc
•
Filing: 1967-11-21
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Granted: 1968-11-19
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Expires: 1987-11-21
Abstract
No abstract record available.
Inventors
- 👤 Seymour B Alpert
- 👤 Ronald H Wolk
- 👤 Michael C Chervenak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:30
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/14; C10G45/20; B; B01; B01J; B01J8/00; B01J8/18; B01J8/20; B01J8/22; C10G45/16; C10G47/00; C10G47/24; C10G47/26; C10G47/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |